Outcomes | Entire dataset (n = 1230) | 2009 IOM GWG guidelinesa | ||
---|---|---|---|---|
Inadequate GWG (n = 517, 42.0%) | Adequate GWG (n = 270, 22.0%) | Excessive GWG (n = 443, 36.0%) | ||
GWG-related outcomes | ||||
Weight gain (kg), mean (SD) | 6.3 (4.9) | 2.8 (3.4) | 6.9 (2.8) | 10.1 (4.4) |
Rate of weight gain in 2nd–3rd trimester (kg/week), mean (SD) | 0.38 (0.32) | 0.14 (0.21) | 0.39 (0.09) | 0.65 (0.28) |
GWG adequacy, n (%)b | ||||
Inadequate GWG | 553 (45.0) | 456 (88.2) | 82 (30.4) | 15 (3.4) |
Adequate GWG | 377 (30.6) | 48 (9.3) | 174 (64.4) | 155 (35.0) |
Excessive GWG | 300 (24.4) | 13 (2.5) | 14 (5.2) | 273 (61.6) |
Adverse pregnancy outcomes | ||||
Gestational age at delivery (weeks), mean (SD) | 39.5 (3.3) | 39.7 (3.6) | 39.6 (2.7) | 39.0 (3.3) |
Infant birth weight (kg), mean (SD) | 3.1 (0.5) | 3.1 (0.5) | 3.2 (0.5) | 3.2 (0.6) |
Low birth weight (< 2.5 kg), n (%) | 92 (7.5) | 40 (7.7) | 15 (5.6) | 37 (8.4) |
Preterm birth (< 37 weeks), n (%) | 195 (15.9) | 76 (14.7) | 41 (15.2) | 78 (17.6) |
SGA, n (%)c | 199 (16.2) | 101 (19.5) | 40 (14.8) | 58 (13.1) |
LGA, n (%)c | 134 (10.9) | 36 (7.0) | 38 (14.0) | 60 (13.5) |
Stillbirth, n (%)d | 47 (3.8) | 12 (2.3) | 9 (3.3) | 26 (5.9) |